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Auxiliary sealing element material for mechanical seal and preparation method thereof

A technology for mechanical seals and seals, applied in the field of shaft sealing materials and sealing materials, can solve the problems of loss of efficacy, easy aging and wear of the auxiliary sealing ring of the rotating ring, etc. Effect

Active Publication Date: 2014-11-19
ENG EQUIP CO LTD SUZHOU SAI SIDE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The auxiliary sealing ring of the rotating ring is easy to age and wear, and loses its effectiveness during use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0019] An auxiliary seal material for mechanical seals in this embodiment, the proportioning parts are as follows: mixed rubber 75-95, melamine 1-2, zinc oxide 1-2, molybdenum disulfide 1-2, ditetradecyl alcohol ester 4-6, chlorinated paraffin 6-8, polyethylene wax micropowder 4-5, tetrabutylammonium bromide 1-2, diisopropyl xanthate disulfide 1-2, anti-aging agent 1-2, poly Butyl acrylate 2-3, limestone 5-7, terpineol 1-2.

[0020] Among them, the mixed rubber is made of polyether polyurethane rubber and fluorine rubber with a weight ratio of 1:9, and the limestone is slaked lime containing a small amount of quicklime impurities or quicklime absorbing water and damp.

[0021] The anti-aging agent adopts phenolic anti-aging agent. Since the rubber in this case contains high fluorine and is more stable than other rubbers, it is more environmentally friendly and safe to use phenolic anti-aging agent with poor anti-aging effect but less pollution. And the anti-aging effect is no...

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PUM

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Abstract

The invention relates to a sealing material, and belongs to the technical field of shaft lever sealing materials which are used for pumps, valves, speed reducers and the like and perform rotary motion. The sealing material comprises the following components in parts by weight: 75-95 parts of mixed rubber, 1-2 parts of melamine, 1-2 parts of zinc oxide, 1-2 parts of molybdenum disulfide, 4-6 parts of carbon alcohol ester dimyristate, 6-8 parts of chlorinated paraffin, 4-5 parts of polyethylene wax micropowder, 1-2 parts of tetrabutylammonium bromide, 1-2 parts of dithiodiisopropyl xanthate, 1-2 parts of anti-aging agents, 2-3 parts of poly(butyl acrylate), 5-7 parts of limestone and 1-2 parts of terpineol. The preparation method of the sealing material comprises the following steps: blending; internally mixing; flaking; extruding; vulcanizing. The sealing material disclosed by the invention has the advantages of more abrasion resistance and corrosion resistance and lower pollution.

Description

technical field [0001] The invention relates to a sealing material, which belongs to the technical field of shaft rod sealing materials used for pumps, valves, reducers and the like with rotary motion. Background technique [0002] Most of the existing pumps use the packing of fixed specifications, which are filled into the stuffing box of the pump. Although this sealing method is relatively simple and can achieve a certain degree of effect, there is still a certain degree of friction between this type of packing and the pump shaft. The heat is also amazing, so it often needs to work with the cooling system. At the same time, long-term use is also very serious for bearing wear, and long-term use will cause permanent damage to the bearing. [0003] Mud packing --- also known as: "injection soft packing" is a high-grade "packing" refined from a new generation of high-performance fibers with special grease and lubrication—soft packing, any size, any size Shape, easy to insta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/12C08L75/08C08L33/08C08K13/02C08K5/3492C08K3/22C08K3/30C08K5/02C08K5/19C08K3/26B29C35/02
Inventor 张军吴宇英曹启广马巧根陈秋兰叶爱琴
Owner ENG EQUIP CO LTD SUZHOU SAI SIDE